CT scanning was performed with the Somatom FORCE CT machine (Siemens). Standard protocol was followed as all patients were asked to hold their breath during the scanning process, and were subjected to fasting for 4 h prior to the scan, as they received 500 ml 5% diatrizoate before the enhanced scanning. All patients received 60–80 ml non-ionic contrast agent iohexol (300 milligrams of iodine per milliliter) by injection into the forearm with a high-pressure syringe, with the injection flow rate of 3–5 ml/sec. For the arterial phase (medullary phase) and the venous phase (renal parenchyma phase), scanning delay time was set at 30 and 80 sec after the injection of contrast agent, using the dual-energy mode, with the tube voltage of 100 kilovolt peak (kVp) and tin filter (Sn) 150 kVp, respectively. The automatic exposure system was activated, with the tube currents of 130–180 milliampere-seconds (mAs) and 80–90 mAs, for 100 kVp and Sn 150 kVp, respectively.
Somatom force ct machine
Manufactured by Siemens
The Somatom FORCE CT machine is a computed tomography (CT) imaging system manufactured by Siemens. It is designed to capture high-quality, low-dose images of the body's internal structures.
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Lab products found in correlation
2 protocols using somatom force ct machine
1
Standard CT Scanning Protocol for Abdomen
2
TAVI Procedure Preoperative Planning
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A total of 104 individuals were selected for this dataset. Male subjects, who composed 48% of the cohort, had an average age of 78.9 ± 6.2, and female subjects’ average age was 80.8 ± 5.9. They were all candidates for TAVI and exhibited some level of aortic valve calcification. An ECG-gated contrast CT angiography of the aortic root and heart was performed on these patients as part of their TAVI preoperative planning using a Siemens SOMATOM Force CT machine, located at the Montreal Heart Institute (MHI). The resultant images were of the dimension (512 × 512 × n), with n denoting a slice thickness of 1 mm. Images had pixel spacing ranging from 0.256 to 0.525 mm for X and Y coordinates, respectively. The expert cardiologist annotated landmarks on all 104 scans for training and validation (70, 17, 17). Images were resampled with a pixel spacing of 1 × 1 × 1 mm, preprocessed with CLAHE [24 (link)] and then normalized between 0 and 1.
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